/Engine/Source/Editor/CurveEditor/Public/ICurveEditorDragOperation.h
Potentially Evaluate a MouseWheel event which occcured during this drag operation
[FReply](API\Runtime\SlateCore\Input\FReply) MouseWheel ( FVector2D InitialPosition, FVector2D CurrentPosition, const [FPointerEvent](API\Runtime\SlateCore\Input\FPointerEvent) & MouseEvent )